A calf strain suffered in Saturday's
Should Altidore be unable to go, Klinsmann has a number of candidates to start at forward, including the Galaxy's
But Evans' absence leaves the U.S. with a gaping hole at right back, where the Sounders' versatile midfielder started in the last three World Cup qualifiers. He was replaced on the U.S. roster by defender
Parkhurst, 29, started five of six matches in July's
With a victory in Costa Rica, combined with a tie between Mexico and Honduras and a Jamaican win or draw at Panama, the U.S. would become the sixth nation to guarantee itself a berth in Brazil next summer. And if the U.S. wins its spot on the sixth of 10 match days in the final round of regional qualifying, it would be the earliest clinching in national team history.
The U.S., which has never won in Costa Rica, is riding a record 12-match winning streak and has averaged more than three goals a game over that span, climbing back into the top 20 in the FIFA world rankings for the first time in 2 1/2 years. It hasn't lost a World Cup qualifier since February.